SOLARFOCUS GmbH

Model Therminator II -Combi Boiler - Log Wood + Pellet

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The customer can burn log wood or wood pellet in one boiler. If the wood burning boiler is used with wood pellet then the boiler operates as an automatic heaing system. The boiler burns high efficient on wood pellet and on log wood. 

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It`s good to know you are flexible when it comes to heating:

  • Manual and inexpensive heating with log wood
    Easy and convenient heating with pellets

  • Efficiency with log wood up to: 94.4 %
    Efficiency with pellets up to: 95.4 %

  • Intuitive touchscreen boiler control

Available power ratings:

  • 22, 30, 40, 49 and 60 kW

  • Manual filling, suction or auger extraction

At first glance, all pellet boilers are the same. But the difference is in the detail – and that is significant for low-maintenance and reliable operation! The SOLARFOCUS developments are protected by numerous patents. Pioneering technology for your pellet boiler!

Downfiring combustion technology
  • When using downfiring combustion technology (wood gasification technology) the released gas is sucked through the grate and burned (residue-free) in the combustion chamber with a flame tip temperature of approx. 1,200°C.
  • Efficient fuel utilization
    Highest efficiencies
Lambda sensor
  • The Lambda technology, which has been used by SOLARFOCUS since 1981, enables uniform combustion of the pellets in the therminator. Lambda technology is essential to ensure maximum efficiency with different load ranges.

  • Guarantees environmentally-friendly, energy-saving combustion in all load ranges. Decades of experience using Lambda technology.

Only one combustion chamber – stainless steel filling chamber
  • The unique design of the therminator II allows you to burn pellets and log wood in one combustion chamber.

  • Pellet operation is fully automatic.

  • The generously dimensioned stainless steel filling chamber is designed to accommodate logs with a length of half a metre (max. 56 cm). 

  • Large filling chamber – long burning time. 10-year guarantee as per maintenance contract on the filling chamber.

Hopper grate
  • The patented, funnel-shaped chrome-plated steel crucible provides the greatest heat volume with the smallest surface.

  • Resulting in lower heat losses.

Automatic ignition / ember retention
  • The boiler ignites the log wood fully automatically via a hot-air fan at the times you set.
  • You can select the "Ember retention" function: Embers then remain in the combustion chamber on the hopper grate for a certain time. This facilitates firing up after a complete burn-out.
Generously dimensioned ash chamber
    • Large ash chamber, compressed fireclay bricks. Easy to replace, no complicated setup work required.

    • Lengthens the intervals for emptying of the ash. 

    • Individually mounted fireclay bricks are service-friendly and ensure a long service life for the high-temperature combustion chamber.

    Induced draft fan
    • The combustion air needed in the various areas is sucked in by the speed-controlled induced draft fan. It is controlled by the microprocessor which is built into the control system by the measuring values determined by the lambda sensor.

    • Efficient external rotor motor with stainless steel fan vanes, low noise, maintenance free with speed monitoring.

    Secondary air control with servo-motor
      • The lambda-controlled secondary air admixture allows unparalleled combustion quality with highest efficiencies even when burning different biomass fuels (pellets, log wood).

      • Even in the partial-load range, the therminator II touch remains many times below the emission limit values.

      Backup battery
      • The backup battery prevents overheating in log wood mode in the event of a power failure.

      • Corrugated stainless steel pipe for best quality and safety.

      Flange for pellet auger
      • Pellet flange optionally on the left or right.
        Also available with blanking flange.

      • You can simply expand the boiler for automated pellet operation at all times!

      Automatic switchover from log wood to pellets – optional
        • To clean the combustion grate, a special motor transfers vibrations at preset intervals to the stainless steel combustion grate.
          Boilers manufactured after 2012 can be retrofitted at any time.

        • Ideal for daily changeover from log wood to pellet operation.
          Once the log wood has been used up, the boiler automatically starts pellet operation – without any conversion work required!

        A picture is worth a thousand words
        Schematic diagram of therminator touch 22 with 110 liters storage container
        1. Lambda sensor
        2. Air-cooled crucible made of cast chrome steel
        3. Induced Draft fan
        4. Automatic heat exchanger cleaning system
        5. Automatic ignition by hot air fan
        6. Filling door
        7. Safety temperature limiter (STL)
        8. Stainless steel filling chamber
        9. Generous ash chamber lined with fireclay
        10. Casing
        11. Control system ecomanager-touch
        12. Primary air control
        13. Secondary air control with servomotor
        14. Backup battery
        15. Grate
        16. Flange for automatic filling
          (optional left or right)
        17. Pellet storage tank 110 litres,
          with charging auger optionally left
          or
          Pellet storage tank 250 litres,
          with charging auger optionally left or right